Product overview
Description
The A6986I is an automotive grade device specifically designed for the isolated buck topology. The 100% duty cycle capability and the wide input voltage range meet the cold crank and load dump specifications for automotive systems. The primary output voltage can be accurately adjusted, whereas the isolated secondary output is derived by using a given transformer ratio. No optocoupler is required. The primary sink capability typically up to 1.9 A (even during soft-start) allows a proper energy transfer to the secondary side as well as enabling a tracked soft-start of the secondary output. The control loop is based on a peak current mode architecture and the device operates in forced PWM. The 300 ns blanking time filters oscillations, generated by the transformer leakage inductance, making the solution more robust. Pulse-by-pulse current sensing on both power elements implements an effective constant current protection in the primary side. Due to the primary reverse current limit, the secondary output is protected against short-circuit events. A primary output voltage supervisor, which notifies primary output voltage regulation through the RST open collector output, overvoltage protection, adjustable switching frequency, synchronization and a programmable soft-start are also available. For traditional buck topology in automotive application the A6986 / A6985F / A6986F / A6986H is recommended.
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All features
- AEC-Q100 Grade 1 qualified
- Designed for iso-buck topology
- 4 V to 38 V operating input voltage
- Primary output voltage regulation / no optocoupler required
- 1.9 A typical sink peak primary current capability
- Peak current mode architecture in forced PWM operation
- 300 ns blanking time
- 8 µA IQ-SHTDWN
- Adjustable fSW and synchronization
- Embedded primary output voltage supervisor
- Adjustable soft-start time
- Internal primary current limiting
- Overvoltage protection
- RDS(on) HS = 180 mΩ, RDS(on) LS = 150 mΩ
- Thermal shutdown
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All resources
| Resource title | Version | Latest update |
|---|
Product Specifications (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 2.0 | 08 Jun 2021 | 08 Jun 2021 |
Technical Notes & Articles (2)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 2.4 | 11 Jul 2023 | 11 Jul 2023 | ||
| 1.0 | 02 May 2023 | 02 May 2023 |
Presentations (1)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 2.2 | 02 Aug 2023 | 02 Aug 2023 |
Brochures (3)
| Resource title | Version | Latest update | ||
|---|---|---|---|---|
| 3.0 | 27 Jul 2022 | 27 Jul 2022 | ||
| 4.0 | 26 Sep 2022 | 26 Sep 2022 | ||
| 1.1 | 02 Nov 2022 | 02 Nov 2022 |
EDA Symbols, Footprints and 3D Models
STMicroelectronics - A6986I
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| A6986ITR | Active | HTSSOP16 | Automotive | Ecopack2 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| A6986ITR | distributors No availability of distributors reported, please contact our sales office | Active | EAR99 | NEC | Tape and Reel | HTSSOP16 | - | - | PHILIPPINES | | ||
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors